Alert archive / South Dakota / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 63, NWS Sioux Falls, SD

July 30, 1989Lincoln County, Minnehaha County, South Dakota

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 30, 1989, 5:01 PM CDT for Lincoln County, Minnehaha County, South Dakota. It was in force for 29 min.

The area

The counties it named.

The facts

Issued: Jul 30, 1989, 5:01 PM CDT (22:01 UTC)
Expired: Jul 30, 1989, 5:30 PM CDT
In force: 29 min
Issued by: NWS Sioux Falls, SD
Area: Whole counties

Counties Lincoln County, SD, Minnehaha County, SD

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

The nearest sounding before it

Minneapolis, MN (KSTC), launched 12:00Z, 10.0 hours before the alert went out and 294 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 569 m above ground
0-6 km bulk shear: 44 kt
0-1 km storm-relative helicity: 54 m²/s²
0-3 km storm-relative helicity: 67 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -0.0

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Special weather statement, Jul 30, 2:53 PM CDT, 2 hours 8 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
250 PM CDT SUN JUL 30 1989

...STONG THUNDERSTORMS OVER SOUTHWEST MINNESOTA...

AT 245 PM RADAR INDICATED STRONG THUNDERSTORMS WITH VERY HEAVY RAIN AND
HAIL OVER THE SOUTHWEST MINNESOTA COUNTY OF MURRAY. THE THUNDERSTORMS
WERE IN AN AREA FROM 40 MILES NORTHEAST OF SIOUX FALLS NEAR CHANDLER
MINNESOTA TO 60 MILES NORRHEAST OF SIOUX FALLS NEAR DOVRAY MINNESOTA.
AT 240 PM CDT PEA SIZE HAIL AND HEAVY RAIN WAS REPORTED IN THE
DOVRAY AREA...WHILE LAKE WILSON AND CHANDLER REPORTED VERY HEAVY RAIN.
THE THUNDERSTORMS WERE MOVING EAST SOUTHEAST AT 15 MPH.

PEOPLE THROUGH SOUTHWEST MINNESOTA...ESPECIALLY IN THE TOWN OF CHANDLER6
...WILMONT...FULDA...WORTHINGTON..LAKEFIELD...HERON LAKE AND WESTBROOK
SHOULD BE ALERT UNTIL 430 PM CDT.

BEHREND

Special weather statement, Jul 30, 3:58 PM CDT, 1 hour 3 minutes before

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Special weather statement, Jul 30, 4:17 PM CDT, 44 minutes before

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      <h1 id="headline">This service is currently unavailable.</h1>
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        The site you requested is temporarily down for maintenance or an unexpected outage.
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The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 30, 3:05 PM CDT	Tornado Warning	FSD	Jackson, Murray, Nobles	25 min
Jul 30, 3:24 PM CDT	Tornado Warning	FSD	Jackson, Nobles	16 min

Nearby

Severe Thunderstorm Warnings in South Dakota, 1989 Every severe thunderstorm warning in 1989

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.